The U.S. government estimates the population at 101.8 million (midyear 2019 estimate). Most experts and media sources state that approximately 90 percent of the population is Sunni Muslim and approximately 10 percent is Christian (estimates range from 5 to 15 percent). Approximately 90 percent of Christians belong to the Coptic Orthodox Church, according to Christian leaders.

Other Christian communities together constitute less than 2 percent of the population and include Anglican/Episcopalian and other Protestant denominations, Armenian Apostolic, Catholic (Armenian, Chaldean, Melkite, Maronite, Latin, and Syrian), and Orthodox (Greek and Syrian) Churches. The Protestant community includes Apostolic Grace, Apostolic, Assemblies of God, Baptists, Brethren, Christian Model Church (Al-Mithaal Al-Masihi), Church of Christ, Faith (Al-Eyman), Gospel Missionary (Al-Kiraaza bil Ingil), Grace (An-Ni’ma), Independent Apostolic, Message Church of Holland (Ar-Risaala), Open Brethren, Pentecostal, Presbyterian, Revival of Holiness (Nahdat al-Qadaasa), and Seventh-day Adventist. Jehovah’s Witnesses account for 1,000-1,500 persons, according to media estimates, and there are also an estimated 150 members of The Church of Jesus Christ of Latter-day Saints (Church of Jesus Christ), the vast majority of whom are expatriates. Christians reside throughout the country, although the percentage of Christians is higher in Upper Egypt and in some sections of Cairo and Alexandria, according to religious and civil society groups.

Scholars estimate that Shia Muslims comprise approximately 1 percent of the population. Baha’i representatives estimate the size of the community to be between 1,000 and 2,000. There are very small numbers of Dawoodi Bohra Muslims, Ahmadi Muslims, and expatriate members of various groups.

According to a local Jewish nongovernmental organization (NGO), there are six to 10 Jews. There are no reliable estimates of the number of atheists.

The U.S. government estimates the total population at six million (midyear 2019 estimate). There are no reliable figures on religious affiliation. Some government, religious, and international sources estimate the population to be 49 percent Christian and 49 percent Sunni Muslim. The Pew Foundation in 2016 estimated the population to be 63 percent Christian and 37 percent Muslim. The Christian population is predominantly Eritrean Orthodox. Catholics, Protestants, and other Christian denominations, including Greek Orthodox, Jehovah’s Witnesses, and Pentecostals, constitute less than 5 percent of the Christian population. Some estimates suggest 2 percent of the population is traditionally animist. The Baha’i community reports approximately 200 members. Only one Jew remains in the country.

A majority of the population in the southern and central regions is Christian. A majority of the Tigrinya, the largest ethnic group, is Christian. The Tigre and the Rashaida, the largest minority ethnic groups, are predominantly Muslim and reside mainly in the northern regions of the country.

The U.S. government estimates the total population at 111.5 million (midyear 2019 estimate). The most recent census, conducted in 2007, estimated 44 percent of the population adheres to the EOTC, 34 percent are Sunni Muslim, and 19 percent belong to Christian evangelical and Pentecostal groups. The overall population, however, has since changed significantly, and observers in and outside the government state those numbers are not necessarily representative of the present composition. Most observers believe the evangelical and Pentecostal proportion of the population has increased. The EOTC predominates in the northern regions of Tigray and Amhara, while Islam is most prevalent in the Afar, Oromia, and Somali Regions. Established Protestant churches have the most adherents in the SNNP and Gambella Regions and parts of Oromia Region. Groups that together constitute less than 5 percent of the population include Eastern Rite and Roman Catholics, members of The Church of Jesus Christ of Latter-day Saints, Jehovah’s Witnesses, Jews, and practitioners of indigenous religions. The Rastafarian community numbers approximately 1,000, and its members primarily reside in Addis Ababa and the town of Shashemene in Oromia Region.

The U.S. government estimates the total population at 10.3 million (midyear 2019 estimate). The majority of the population is Christian. The 2010 Pew-Templeton Global Religious Futures Project report estimated that Christians make up 60 percent of the population, indigenous religious followers 33 percent, and Muslims 6 percent. Other religious groups with small populations include the Baha’i Faith, Buddhism, Hinduism, and Judaism. The country’s massive population displacement resulting from nearly a decade of conflict, as well as a large population of pastoralists who regularly migrate within and between countries make it difficult to estimate the overall population and its religious demography accurately.

According to the South Sudan Council of Churches (SSCC) and the government Bureau of Religious Affairs, the principal Christian denominations are Roman Catholic, Episcopal, Presbyterian, Pentecostal, Sudan Interior, Presbyterian Evangelical, and African Inland Churches. Smaller populations of Eritrean Orthodox, Ethiopian Orthodox, Coptic Orthodox, Greek Orthodox, members of The Church of Jesus Christ of Latter-day Saints, Seventh-day Adventists, and Jehovah’s Witnesses are also present. Many of those who adhere to indigenous religious beliefs reside in isolated parts of the country; a substantial part of the population in these areas also combines Christian and indigenous practices.

The U.S. government estimates the total population at 44.4 million (midyear 2019 estimate). According to the Sudanese government, approximately 91 percent of the population is Muslim. It is unclear whether government estimates include South Sudanese (predominantly Christian or animist) who did not leave after the 2011 separation of South Sudan or returned after conflict erupted in South Sudan in 2013, or other non-South Sudanese, non-Muslim groups. The UN High Commissioner for Refugees reports 1,056,536 refugees and asylum seekers in the country, including 810,155 South Sudanese refugees. Some religious advocacy groups estimate non-Muslims make up more than 13 percent of the population.

Almost all Muslims are Sunni, although there are significant distinctions among followers of different Sunni traditions, particularly among Sufi orders. Small Shia Muslim communities are based predominantly in Khartoum. At least one Jewish family remains in the Khartoum area.

The government reports the presence of 36 Christian denominations in the country. Christians reside throughout the country, primarily in major cities, such as Khartoum, Port Sudan, Kassala, Gedaref, El Obeid, and El Fasher. Christians also are concentrated in some parts of the Nuba Mountains and Blue Nile State.

Relatively small but long-established groups of Coptic Orthodox and Greek Orthodox Christians are in Khartoum, El Obeid in North Kordofan, River Nile and Gezira States, and eastern parts of the country. Ethiopian and Eritrean Orthodox communities largely made up of refugees and migrants are in Khartoum and the eastern part of the country. Other larger Christian groups include the Catholic Church, Episcopal Anglican Church, Sudan Church of Christ, Sudan Evangelical Presbyterian Church, and Presbyterian Church of the Sudan. Smaller Christian groups include the Africa Inland Church, Armenian Apostolic Church, Sudan Interior Church, Sudan Pentecostal Church, Seventh-day Adventist Church, and Jehovah’s Witnesses.

Government statistics indicate less than 1 percent of the population, primarily in Blue Nile and South Kordofan States, adheres to traditional African religious beliefs. Some Christians and Muslims incorporate aspects of these traditional beliefs into their religious practice. A small Baha’i community primarily operates underground.